64434525 has 24 divisors (see below), whose sum is σ = 107326464. Its totient is φ = 34108800.

The previous prime is 64434499. The next prime is 64434541. The reversal of 64434525 is 52543446.

It is not a de Polignac number, because 64434525 - 2¹⁷ = 64303453 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7140 + ... + 13410.

It is an arithmetic number, because the mean of its divisors is an integer number (4471936).

Almost surely, 2^64434525 is an apocalyptic number.

It is an amenable number.

64434525 is a deficient number, since it is larger than the sum of its proper divisors (42891939).

64434525 is a wasteful number, since it uses less digits than its factorization.

64434525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421 (or 6416 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 64434525 is about 8027.1118716510. Note that the first 3 decimals coincide. The cubic root of 64434525 is about 400.9032193685.

The spelling of 64434525 in words is "sixty-four million, four hundred thirty-four thousand, five hundred twenty-five".